package com.lagou.dao.Impl;

import com.lagou.dao.CourseDao;
import com.lagou.pojo.Course;
import com.lagou.utils.DruidUtils;
import org.apache.commons.dbutils.QueryRunner;
import org.apache.commons.dbutils.handlers.BeanListHandler;

import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;

public class CourseDaoImpl implements CourseDao {


    @Override
    public List<Course> findCourseNameAndStatus(String course_name, String status) {

        try {
            QueryRunner qr = new QueryRunner(DruidUtils.getDataSource());
//        String sql = "select id,course_name,price,sort_num,status from course where is_del=?";
            StringBuffer sb = new StringBuffer("select id,course_name,price,sort_num,status from course where is_del=?");
            List<Object> list = new ArrayList<>();
            list.add(0);

            if(course_name!=null){
                course_name = "%"+course_name+"%";
                sb.append(" and course_name like ?");
                list.add(course_name);
            }else if (status!=null){
                sb.append(" and status = ?");
                int i = Integer.parseInt(status);
                list.add(i);

            }
            List<Course> result = qr.query(sb.toString(), new BeanListHandler<Course>(Course.class), list.toArray());
            return result;
        } catch (SQLException e) {
            e.printStackTrace();
            return null;
        }
    }



    @Override
    public List<Course> findCourseList() {

        try {
            QueryRunner qr = new QueryRunner(DruidUtils.getDataSource());
            String sql = "select id,course_name,price,sort_num,status from course where is_del=?";
            List<Course> query = qr.query(sql, new BeanListHandler<Course>(Course.class), 0);
            return query;
        } catch (SQLException e) {
            e.printStackTrace();
            return null;
        }

    }

    @Override
    public int SaveCourseSales(Course course) {


        try {
            QueryRunner qr = new QueryRunner(DruidUtils.getDataSource());

            String sql = "INSERT INTO course(\n" +
                    "course_name,\n" +
                    "brief,\n" +
                    "teacher_name,\n" +
                    "teacher_info,\n" +
                    "preview_first_field,\n" +
                    "preview_second_field,\n" +
                    "discounts,\n" +
                    "price,\n" +
                    "price_tag,\n" +
                    "share_image_title,\n" +
                    "share_title,\n" +
                    "share_description,\n" +
                    "course_description,\n" +
                    "course_img_url,\n" +
                    "STATUS,\n" +
                    "create_time,\n" +
                    "update_time\n" +
                    ")VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?);";

            Object[] param = {
                    course.getCourse_name(), course.getBrief(), course.getTeacher_name(), course.getTeacher_info(),
                    course.getPreview_first_field(), course.getPreview_second_field(), course.getDiscounts(), course.getPrice(),
                    course.getPrice_tag(), course.getShare_image_title(), course.getShare_title(), course.getShare_description(),
                    course.getCourse_description(), course.getCourse_img_url(), course.getStatus(), course.getCreate_time(), course.getUpdate_time()
            };
            int row = qr.update(sql, param);
            return row;
        } catch (SQLException e) {
            e.printStackTrace();
            return 0;
        }



    }
    @Override
    public List<Course> findCourseById(int id) {



        try {
            QueryRunner qr = new QueryRunner(DruidUtils.getDataSource());

            String sql = "SELECT \n" +
                    "id,\n" +
                    "course_name,\n" +
                    "brief,\n" +
                    "teacher_name,\n" +
                    "teacher_info,\n" +
                    "preview_first_field,\n" +
                    "preview_second_field,\n" +
                    "discounts,\n" +
                    "price,\n" +
                    "price_tag,\n" +
                    "course_img_url,\n" +
                    "share_image_title,\n" +
                    "share_title,\n" +
                    "share_description,\n" +
                    "course_description,\n" +
                    "STATUS\n" +
                    "FROM course WHERE id = ?;";
            List<Course> list = qr.query(sql, new BeanListHandler<Course>(Course.class), id);
            return list;

        } catch (SQLException e) {
            e.printStackTrace();

            return null;
        }


    }
}
